add IsOk() to all classes having Ok() method (patch 1570985)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41751 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/metafile.h

@@ -47,7 +47,8 @@ public:
     virtual bool SetClipboard(int width = 0, int height = 0);
 
     virtual bool Play(wxDC *dc);
-    bool Ok() const ;
+    bool Ok() const { return IsOk(); }
+    bool IsOk() const ;
 
     wxSize GetSize() const;
     int GetWidth() const { return GetSize().x; }